Dry and bitter mouth with bloating is considered to be caused by dietary and mental factors, and may also be caused by cirrhosis of the liver, bile reflux gastritis and other disease factors. 1. Dietary factors: lack of drinking water, eating some bitter and indigestible food will appear dry mouth, bitter mouth with abdominal distension. 2. Mental factors: prolonged exposure to high pressure can lead to vegetative nervous system dysfunction, which can also affect gastrointestinal motility and bile excretion, and then cause gastrointestinal symptoms such as bitter mouth and abdominal distension. 3. Digestive system diseases: patients with cirrhosis may have abdominal distension and bitter mouth, and patients with cirrhosis accompanied by ascites may have dry mouth due to the need to restrict the intake of water and sodium. Bile reflux gastritis is caused by the reflux of bile, pancreatic fluid and other duodenal contents into the stomach, and may be accompanied by symptoms of bitter mouth and abdominal distension, as well as nausea, vomiting, belching and so on. It is recommended to go to the hospital and ask the doctor to make a judgment if necessary in the case of dry mouth, bitter and bloating.